Why mitochondrion and chloroplast are not considered in the endomembrane system?

Which pigment is mainly responsible for the colour of the carrot?

Given one difference between the characteristic feature of Gram positive and Gram negative bacteria.

In which organelle the proteins required for functioning of the nucleus are formed.

Which layer of cell envelope is sticky in nature? Also give another name for this layer.

What are the disadvantage of multicellularity?

Give significance of glycocalyx.

How do the ribosomes of prokaryotic cells differ from the ribosomes of eukaryotic cells? Also, tell what is similar about them?

Mention two functions of the centrioles.

What are the major functions of plant cell vacuoles?What is the covering membrane of the vacuoles called?

Which four different sites in plant cells have ribosomes?

Give the biochemical composition of the plasma membrane.How are lipid molecules arranged in the membrane?

Distinguish between chloroplast and chromoplast.

Is extra genomic DNA present in prokaryotes and eukaryotes?If yes, locate their position in both types of organisms.

In what respect the mitochondria and plastids resemble the bacteria.

Fill in the blanks at A, B, and C as shown in diagram

Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.

The diagram shows some of the structures present in an animal cell.

Which of these structures is responsible for
(i) Manufacture of lipids and steroids 
(ii) Release of energy
(iii) Manufacture of hormones and digestive enzymes
(iv) Production of spindle fibres in cell division 
(v) Endo and exocytosis?

Describe the structure of the following with the help of labelled diagrams.
(i) Nucleus
(ii) Centrosome

Name two cell-organelles that are double membrane bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both.